Apparatus and a method for controlling an engine

Details Apparatus and a method for controlling an engine Apparatus and a method for controlling an engine

2005-04-12

2005-04-12

Dolinar, Andrew M. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S406530, C123S491000, C123S179180

Reexamination Certificate

active

06879905

ABSTRACT:
Engine cranking control is ended when it is detected that the battery voltage for driving the starter is lowered to at least as low as a starter drive judgment value and thereafter, returns to at least a starter stop judgment value during the engine cranking control that is started on condition that an engine is rotating. A start for driving a starter and a stop of driving the starter can be distinguished based on battery voltage where the battery voltage recovers due to a rapid reduction of consuming current and a rapid increase of a generating current when a driver recognizes an engine combustion completion and stops a starter driving. As a result, on increase of an engine friction, the cranking control is accurately ended, preventing deterioration of a fuel economy and excess exhaust gas emission.

REFERENCES:
patent: 4681079 (1987-07-01), Kaneta
patent: 4683859 (1987-08-01), Tamura et al.
patent: 5970936 (1999-10-01), Cabrera et al.
patent: 6438487 (2002-08-01), Mingo et al.
patent: 9-170534 (1997-06-01), None

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